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Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...

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Energies Investments and Cooperations: Betz defeated ???

Last Post by Abennor « 18/05/10, 17:23

by Abennor » 18/05/10, 17:23

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Creation of wind turbine blades wood

Last Post by zorglub « 12/05/10, 20:56
answers: 3
by airsp » 11/05/10, 23:47

3 Replies

4954 views

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12/05/10, 20:56
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Energy from heat - against Carnot's principle

Last Post by bernardd « 08/05/10, 23:51
answers: 7
by nonoLeRobot » 30/01/06, 18:18

7 Replies

6566 views

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08/05/10, 23:51
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wind Batteries: 24 or 48V?

Last Post by michel avignon « 08/05/10, 20:55
answers: 6
by kary85 » 30/03/10, 14:25

6 Replies

6297 views

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08/05/10, 20:55
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Wind questionnaire

Last Post by Christophe « 06/05/10, 10:33
answers: 1
by kary85 » 06/05/10, 10:06

1 Replies

1969 views

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06/05/10, 10:33
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Specific heat capacity

Last Post by dedeleco « 05/05/10, 21:43
answers: 10
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by bbenoit » 22/02/10, 22:00
10 Replies

6307 views

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05/05/10, 21:43
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Wind Survey

Last Post by bobono « 03/05/10, 13:17
answers: 1
by kary85 » 03/05/10, 10:37

1 Replies

2031 views

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03/05/10, 13:17
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Future of electrical storage: flywheel?

Last Post by minguinhirigue « 29/04/10, 09:00
answers: 4
by minguinhirigue » 04/08/08, 15:38

4 Replies

7901 views

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29/04/10, 09:00
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100% renewable energies in 2050, it is possible according to

Last Post by recyclinage « 26/04/10, 12:13
answers: 1
by yoananda » 26/04/10, 10:16

1 Replies

1958 views

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26/04/10, 12:13
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Geothermal pump efficiency

Last Post by dedeleco « 23/04/10, 15:06
answers: 1
by champ » 23/04/10, 11:21

1 Replies

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23/04/10, 15:06
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Electricity and hydraulics = similarity?

Last Post by Alain G « 21/04/10, 04:16
answers: 6
by gery_matane » 19/04/10, 19:39

6 Replies

2618 views

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21/04/10, 04:16
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Search using boiler settings OKOFEN PE 15

Last Post by dirk pitt « 13/04/10, 15:54
answers: 16
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by logredudon » 08/11/08, 23:56
16 Replies

8606 views

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13/04/10, 15:54
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Using glaciers as a source of electrical energy

Last Post by Former Oceano « 29/03/10, 15:22
answers: 18
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by nanook » 25/03/10, 05:29
18 Replies

5904 views

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29/03/10, 15:22
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Turbocharger = Turbine ... steam?

Last Post by Sunflower « 26/03/10, 09:20
answers: 2
by Sunflower » 24/03/10, 11:31

2 Replies

3281 views

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26/03/10, 09:20
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Making a self-winding 5kW wind turbine

Last Post by coucou789456 « 25/03/10, 16:18
answers: 53
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by garthos » 25/01/07, 16:04
53 Replies

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25/03/10, 16:18
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Disadvantages of a "small dam"?

Last Post by sen-no-sen « 22/03/10, 20:50
answers: 17
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by Blaugrana » 22/03/10, 12:00
17 Replies

5990 views

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22/03/10, 20:50
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Passage of water to electricity

Last Post by Ptilu « 22/03/10, 16:39
answers: 5
by Blaugrana » 22/03/10, 12:04

5 Replies

2484 views

Last message by Ptilu View the latest post
22/03/10, 16:39
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Recorder anemograph for wind study

Last Post by fam « 22/03/10, 10:22
answers: 19
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by fam » 29/01/10, 11:20
19 Replies

7794 views

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22/03/10, 10:22
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Vibrating wind turbine

Last Post by oli 80 « 20/03/10, 17:23
answers: 3
by fthanron » 20/03/10, 15:57

3 Replies

1937 views

Last message by oli 80 View the latest post
20/03/10, 17:23
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Wind power generation without wind turbine

Last Post by dedeleco « 19/03/10, 14:02
answers: 4
by oli 80 » 18/03/10, 20:11

4 Replies

3068 views

Last message by dedeleco View the latest post
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